How to develop Go language in Linux

Using the Go language for development in a Linux environment is a widely used development method. The Go language has the characteristics of high efficiency, simplicity, and strong concurrency, and is very suitable for building high-performance Backend services and web applications. This article will introduce how to use Go language for development in a Linux environment, and use specific code examples to demonstrate basic syntax and common operations.

1. Environment configuration

1. Download and install the Go language environment
   First, you need to download the installation package for the corresponding system from the Go official website https://golang.org/ and follow the prompts to install. After the installation is complete, you can enter "go version" on the command line to verify whether the Go environment is installed successfully.

2. Set the Go workspace
   Next, you need to set up the Go workspace in the Linux system. You can edit the .bashrc file and add the following content to it:

   export GOPATH=$HOME/go
   export PATH=$PATH:$GOPATH/bin

   Then Execute the following command to make it effective:

   source ~/.bashrc

3. Create project directory
   In Go development, all code must be located in the src directory under the GOPATH directory, so it needs to be under the GOPATH directory Create the project directory:

   mkdir -p $GOPATH/src/myproject
   cd $GOPATH/src/myproject

2. Write the Hello World program

Next, a simple code example will be used to demonstrate how to use the Go language for development in a Linux environment. .

1. Create the main.go file
   Use a text editor to create a Go source file named main.go, and then enter the following code:

   package main
   
   import "fmt"
   
   func main() {
    fmt.Println("Hello, World!")
   }

2. Compile and run the program
   Switch to the project directory where main.go is located in the terminal, and then execute the following commands to compile and run the program:

   go run main.go

   If everything is normal, the terminal will output "Hello , World!”.

3. Common Go language development operations

In addition to the simple Hello World program, there are also some common Go language development operations, such as package management, dependency management, Testing etc. These operations are demonstrated below with specific code examples.

1. Package management
   Go mod is used in Go language for package management. You can initialize a new module through the following command:

   go mod init mymodule

   Then you can use import to introduce it For other packages, use go build or go run to build or run the program.

2. Dependency Management
   In the Go language, use go get and go mod for dependency management. For example, you can install a third-party library through the following command:

   go get github.com/gin-gonic/gin

   Then use import in the code to import the corresponding library for development.

3. Testing
   The Go language has a built-in testing framework, and test cases can be written by writing the _test.go file. The example is as follows:

   package main
   
   import "testing"
   
   func TestAdd(t *testing.T) {
    result := Add(1, 2)
    if result != 3 {
        t.Error("Expected 3, but got ", result)
    }
   }

   Then execute the following command to test:

   go test

Through the above example, we introduced how to use the Go language for development in the Linux environment and demonstrated Here are some common operations and steps. I hope this article will be helpful to beginners and encourage everyone to continue learning and exploring more knowledge about Go language development.

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